timer.cpp

来自「播放被H264_AAC所压缩的avi文件的播放器。」· C++ 代码 · 共 60 行

// Timer.cpp: implementation of the Timer class.
//
//////////////////////////////////////////////////////////////////////

#include <windows.h>
#include "Timer.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//##ModelId=4753B7E9005E
Timer::Timer()
{
	
}

//##ModelId=4753B7E9005F
Timer::~Timer()
{
	
}

BOOL Timer::Create (UINT nPeriod, UINT nRes, DWORD dwUser, int  pfnCallback(DWORD))
{
	BOOL bRtn = TRUE;  // assume success
	
	// Set data members
	m_nPeriod = nPeriod;
	m_nRes = nRes;
	m_dwUser = dwUser;
	m_pfnCallback = pfnCallback;
		
	// Create multimedia timer
	if ((m_nIDTimer = timeSetEvent (m_nPeriod, m_nRes,TimeProc, (DWORD) this, TIME_PERIODIC)) == NULL)
	{
		bRtn = FALSE;
	}
	
	return (bRtn);
}

//##ModelId=4753B7E90060
void Timer::TimerStop(void)
{
	timeKillEvent(m_nIDTimer);
}

//##ModelId=4753B7E9006D
void CALLBACK Timer::TimeProc(UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
{    
	// dwUser contains ptr to Timer object
	Timer * ptimer = (Timer *) dwUser;
	ptimer->UID=uID;

	// Call user-specified callback and pass back user specified data
	(*(ptimer->m_pfnCallback) )(ptimer->m_dwUser);
}